Beijing - Tirunish Dibaba of Ethiopa completed the first Olympic women's long distance gold medal double on Friday with an emphatic 5,000 metres triumph at the Beijing Games.

Dibaba, 22, ran away from her rivals on the last lap to win a slow-paced race a week after she dominated the 10,000m gold with the second best time in event history.

Jamaica finally ran out of sprint luck when it dropped the baton in the women's 4x100m relay won by Russia.

Former doping offender Maurren Maggi became the first ever Brazilian women's athletics gold medallist in the long jump while Italy's Alex Schwarzer got gold in the men's 50km walk.

Friday's other medal events were the men's pole vault and the completion of the decathlon.

Dibaba cemented her status as the greatest women's distance after already winning the long distance double at the 2005 worlds. She also has a 5,000m world title from 2003 and 10,000m crowd from 2007.

On Friday, she used her famous last-lap kick and crossed the line in 15 minutes 41.40 seconds.

As in the 10,000m, Ethiopia-born Elvan Abeylegesse of Turkey took silver in 15:42.74, while the 2004 champion Meseret Defar of Ethiopia had to settle for bronze this time around in 15:42.12 minutes.

The day after the US embarrassingly dropped the baton in both sprint relays Jamaica shared the same fate when the second handover between 100m silver medallists Sherone Simpson and Kerron Stewart went wrong.

That opened the door for Russia to win gold in 42.31 seconds from Evgeniya Polyakova, Alexandra Fedoriva, Yulia Gushchina and Yuliya Chermoshanskaya. Belgium got silver in 42.54 and Nigeria took bronze in 43.04.

It also meant that Jamaica can't get all six sprint golds, after having won the men's and women's 100m and 200m. The men's 4x100m relay was the final event Saturday with double world record holder Usain Bolt seeking a third gold.

The women's long jump medal order was decided in the first of six rounds, with Maggi, who was banned 2003-2005 for drug abuse, soaring 7.04m for her biggest career success following two Pan American titles.

The 2004 gold medallist Tatyana Lebedeva of Russia got silver but not after a desperate final leap of 7.03m which fell just one centimetre short of what what have been gold on countback.

Blessing Okagbare took bronze for Nigeria in 6.91m the day after being promoted into the final after Ukraine's Lyudmila Blonska was kicked out of the Olympics and stripped of her heptathlon silver by the International Olympic Committee for steroid doping.

Schwarzer gave Italy its first 50 kilometres walk gold in 44 years since Abdon Pamich's success 1964 in Tokyo. The 23-year-old broke a three-man leader group after the 40km mark to claim his first big title after world championship bronze in 2005 and 2007 in 3 hours 37 minutes 9 seconds.

Jared Tallent of Australia added the silver to his 20km bronze in a personal best 3:39:27. Russia's Denis Nizhegorodov got bronze to go with 2004 Olympic silver in 3:40:14 hours on a hot morning.

Bryan Clay of the US was poised to get the Olympic decathlon title following worlds gold in 2005. The American led after nine disciplines with 8,269 points from Belussian Andrei Krauchanka (7,790) and Alexander Pogorelov of Russia (7,777).

Clay got silver 2004 in Athens behind Czech Roman Sebrle, scoring the highest non-winning amount of points with 8,820. The remaining decathlon event is the 1,500m.

The US 4x400m relays didn't drop the baton like the 4x100m women's and men's teams did the previous day, both teams moving into Saturday's finals.